E70 transmission fluid replacement

[Bennettrindge]

I have never replaced the tranny fluid on either of my E70's . 2011 has 100K and the 2012 has 110K. I have read and been advised by my mechanic that changing the fluid can be risky. It seems to me not replacing the fluid beyond 100K is also risky. Can't imagine tranny lasting 125K+ on original fluid. I do have the money to replace tranny if it occurred but would prefer not to, obviously. On a side note I replace engine oil generally whenever I bring it into the shop, generally between 6k-12k mile interval. As they get older, would more frequent change be better? My mechanic has said he prefers 7.5K intervals if I remember correctly. I have read too frequent changes with full synthetic is not optimal.